docs: def ListClients(self, request, timeout=None):
      """Provides basic information about Fleetspeak clients.
  
      Args:
        request: fleetspeak.admin.ListClientsRequest
  
        timeout: How many seconds to try for.
  
      Returns: fleetspeak.admin.ListClientsResponse
      """
      return self._RetryLoop(
          lambda t: self._stub.ListClients(request, timeout=t))